The Prince Frederick, Duke of York and Albany (Frederick Augustus; 16 August 1763 – 5 January 1827) was the second eldest child, and second son, of King George III, a member of the House of Hanover and the British Royal Family.
From the death of his father in 1820 until his own death in 1827, he was the heir presumptive to his elder brother, King George IV, both to the United Kingdom and the Kingdom of Hanover.